Spring-seat.



J. P. NICHOLLS.

SPRING SEAT.

APPLICATION FILED ocT.23. 1912.

13?9 56 Patented Apr. 27, 1915.

2 SHEETS-SHEET 2.

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THE MORRIS PETERS C0.. PHOTU-LITHO.. WASHINGTON. D. C

JOSEPH I. NICHOLLS, OF DENVER, COLORADO.

SPRING-SEAT.

Llamas.

Specicaton of Letters Patent.

Patented Apr. 2"?, 191.5.

Application filed October 23, 1912. Serial No. '727,317`

T0 all whom it may concern Be it known that I, JOSEPH l?. NroHoLLs, a citizen of the United States, residing in the city and county of Denver and State of Colorado, have invented certain new and useful Improvements in Spring-Seats; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the saine, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to spring seats for engine cabs, and is designed for the use of engineers and remen in order to absorb at least partly the jars and vibrations of the engine which are otherwise injurious to the health of the men so employed.

The present invention may be regarded as an improvement over the construction of my previous Patent, No. 627 ,S/10, issued June 27, 1899.

One of the objects of my present invention is to provide a seat which shall be removable from the rails or brackets which may be permanently fixed to each engine in order that it may be possible for each man te own a seat and to move it readily from one engine to another, when, during the course of duty, he is transferred from one engine to another.

Another object of the invention is to provide means for quickly adjusting the spring to the proper tension for persons of different weight where it is desirable that more than one person use the seat.

A further object is to provide a seat and a brace therefor which shall be foldable into small compass.

Still another object is to make the seat vertically adjustable to suit men of diiferent heights, and to make the arm rest vertically adjustable, horizontally adjustable, and removable. w

One embodiment of my invention is illustrated in the accompanying drawing, in which:

Figure 1 is a view in front elevation of my improved spring seat. Fig. 2 is a view partly in cross section taken upon the line 2*-2, Fig. 1, and looking in the direction of the arrow. Fig. 3 is a view similar to Fig. 2, but showing the seat and brace in the folded position, and showing a modified form of supporting means. Fig. 4 is a front elevation of the device as illustrated in Fig. 3, but showing the seat in the raised position. lFig. 5 is a side elevation with certain parts broken away and others in section.

The same reference numerals refer to the same parts in each of the views.

In Figs. 1, 2 and 5, and in Figs. 3 and 4 respectively, I have shown my improved spring seat as applied to two different forms of support. In the former figures it is mounted to slide upon rails 5 T-shaped in cross section secured to a wall or suitable support by means of screws 4 countersunk in the rails in order to present a smooth surface, there being slots of a shape the counterpart of that of the T-rails formed in shoes 6 which engage said rails. Joining the upper and lower pairs of shoes 6 are bars 7 which give rigidity to the device. The means for supporting the device illustrated in Figs. 3 and 1 are brackets 8 secured to the wall of the engine cab by means of screws 9, or other suitable fastenings. In the forward portions of the brackets 8 are upwardly opening slots 10 in which the bars 7 are adapted to rest.

The upper pair of shoes has bars 11 fixed thereto and extending downwardly, the

lower ends of these bars being threaded and passing loosely through openings in the lower shoes 6. Nuts 12 are threaded upon the extremities of the bars 11 in order to control the vertical distance between the shoes of each lateral pair, this adjustment being necessary in order to insure smooth sliding upon the rails 5.

Loosely mounted upon each of the vertical bars 11 are upper and lower sliding members 13 having inwardly extending portions bearing lugs 14 about which the spiral springs 15 are placed. The upper members 13 and the lower members 13 respectively are joined by rods 16. If found desirable, each rod 1 6 may be made integral with the corresponding members 13.

The seat 17 of my invention is secured to a pair of arms 18, each of which is bifurcated at its rear extremity to straddle a ver tically disposed frame bar 19 to which it is pivoted as shown at 20. In the drawing the ivots are shown as bolts having nuts 21 threaded thereon in order that the seats may be readily removed, if it becomes desirable, for the purpose of repair or otherwise. At a suitable distance below each of the pivots 20 is another pivot bolt 22 extending through the frame bar 19 and through the bifurcated end of a brace 23 upon the opposite extremity of which is a T-head 24 for engaging a hook-shaped projection 25 upon the corresponding arm 18 when the seat is in the horizontal or operative position. The braces 23 are connected near their outer ends by a rod 26 having two nuts 27 threaded upon each extremity and arranged to lock against the opposite sides of the braces 23.

Each of the frame bars 19 has a series of porforations 28 through its lower end, a series of perforations 29 somewhat above the middle point, and a series of perforations 3() near its upper end. Cotter pins 31 are secured in the perforations 28 which appear next below the members 13 when the user is on the seat 17. Other cotter pins 32 are adapted to be placed in certain of the perforations 29, the proper ones being selected to cause the seat to assume the desired' height. f

A U-shaped frame bar 33 has clips 34 formed integral with itsV lower ends. Threaded in the clips 34 are thumb-screws 35 which may be caused to extend into certain of the perforations 30, according to the height to which it is desired to adjust the U-shaped frame member 33. An arm rest 36is horizontally slidable upon the horizontal portion of the bar 33, being supported thereon by clips 37 which extend downwardly on each side of the bar 33 and have inwardly directed portions extending beneath the bar 33 for a short distance on either side. In order to permit the removal of the arm rest, the bar 33 is cut away on each side at two points 38, the distance between the Vout away portions being the same as that between the clips 37, whereby in removing the arm rest it is necessary merely to slideV it laterally until the clips 37 are opposite the cut away portions 38, when the arm rest may be lifted vertically away from Athe bar 33. A thumb-screw 39 is threaded in the member 33 and may be caused to bear against a plate 40 upon the lower side of the arm rest 36 to iix the latter in any desired horizontal adjustment.

In Fig. 5 I have illustrated one wall of the engine cab at 41, with the window sash at 42, my improved seat being shown mounted just below the window, which is the preferred position. y

From the foregoing description, the operation of my improved device will be readily apparent. After it has been mounted upon either the T-rails 5 or the brackets 8, the user will place his weight upon the seat 17 and cause the cotter pins 31 to be inserted in the Vperforations 28 in the frame bars 19 which are closest below the lower members 13. By this means the proper adjustment for the tension of the springs 15 will be quickly obtained.' As shown in Figs. 1, 2 and 3, the vertical adjustment of the frame bars 19 is such that the inner ends of the arms 18 rest directly upon the upper sliding members 13, and it is intended that this shall be the adjustment for the person of average height. desirable that the seat shall be raised or lowered from the average height, the cotter pins 31 will be removed and the seat frame, consisting of the bars 19.and 33, will be raised or lowered to the desired point; thereupon cotter pins 32 will be inserted in the perforations appearing just above the upper sliding members 13, and the cotter pins 31 will be inserted as before to control the available resilience of the springs 15. It will be seen that in any adjustment the entire weight of the user will be supported upon the upper sliding members 13. The

However, when it is adjustment of the arm rest will be apparent Y without further description; however, it may be stated thatJ it is frequently desirable to entirely remove the arm rest, and in my construction this may be accomplished in two ways, either by lifting the lugs 37 up through the cut away portions 38 in the rod 33 or by loosening the thumb-screws 35 and removing the U-shaped bar 33 with the arm rest.

I claim:

1. In combination, a support, a member mounted upon said support, a second member arranged directly above the first, and slidable upon the support, a spring interposed between said members, a seat frame supported by said lupper member and extending downwardly through an opening formed in the lower member, a portion of the frame below said opening having perforations therein, and means adapted to be inserted in said perforations to adjust the resilience of the spring.

2. In combination, a vertically disposed supporting frame, two horizontal bars arranged to slide vertically upon said frame, compression springs mounted between said bars, the latter having vertical alining openings near their extremities, rods slidable through said openings, means for adjustably supporting said rods, from the upper bar, and a seat mounted upon said rods.

In testimony whereof I affix my signature in presence of two witnesses. y p

JosEPH P. NicHoLLs. Witnesses EVA I-IALL, MAY` CLEMENTS.

Uopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

